BLACKLINE INC (BL) Institutional Shareholders
BLACKLINE INC (BL) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.70B in BL holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of BL tracked by InsiderSet, reporting ownership valued at approximately $231.30M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $232.04M, representing an estimated gain of +0.32% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 55% of the total disclosed BL value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Clearlake Capital Group, L.P., Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in BLACKLINE INC (BL).
This page ranks the largest institutional BL shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
239
Total Reported Value
$1.70B
Largest Holder
Blackrock, Inc.
Largest Position
$231.30M
Insider Transactions (90d)
22
Latest Filing Quarter
Q2 2026
New Institutional Positions
56
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 8,240,055 | $231,298,330 | $232,039,949 | +$741,619 | +0.32% | |
| Clearlake Capital Group, L.P. | 30.33% | 5,712,300 | $160,344,261 | $160,858,368 | +$514,107 | +0.32% | |
| Vanguard Portfolio Management Llc | 0.00% | 3,801,905 | $106,719,473 | $107,061,645 | +$342,172 | +0.32% | |
| Fivespan Partners, Lp | 22.25% | 3,363,943 | $94,425,880 | $94,728,635 | +$302,755 | +0.32% | |
| First Manhattan Co. Llc. | 0.17% | 2,403,510 | $67,466,526 | $67,682,842 | +$216,316 | +0.32% | |
| Vanguard Capital Management Llc | 0.00% | 2,341,157 | $65,716,277 | $65,926,981 | +$210,704 | +0.32% | |
| State Street Corp | 0.00% | 2,159,214 | $60,606,501 | $60,803,466 | +$196,965 | +0.32% | |
| Iconiq Capital, Llc | 1.69% | 2,087,081 | $58,584,364 | $58,772,201 | +$187,837 | +0.32% | |
| Neuberger Berman Group Llc | 0.03% | 1,805,786 | $50,688,413 | $50,850,934 | +$162,521 | +0.32% | |
| Westwood Holdings Group Inc | 0.28% | 1,318,230 | $37,002,716 | $37,121,357 | +$118,641 | +0.32% | |
| Geode Capital Management, Llc | 0.00% | 1,282,083 | $35,995,222 | $36,103,457 | +$108,235 | +0.30% | |
| Hawk Ridge Capital Management Lp | 1.08% | 1,197,966 | $33,626,906 | $33,734,723 | +$107,817 | +0.32% | |
| Jpmorgan Chase & Co | 0.00% | 1,190,095 | $33,380,326 | $33,513,075 | +$132,749 | +0.40% | |
| Morgan Stanley | 0.00% | 1,135,245 | $31,866,342 | $31,968,499 | +$102,157 | +0.32% | |
| Norges Bank | 0.00% | 1,090,376 | $30,606,854 | $30,704,988 | +$98,134 | +0.32% | |
| Lynrock Lake Lp | 1.89% | 1,066,666 | $29,941,315 | $30,037,315 | +$96,000 | +0.32% | |
| Goldman Sachs Group Inc | 0.00% | 1,001,741 | $28,118,869 | $28,209,027 | +$90,158 | +0.32% | |
| Bank Of America Corp | 0.00% | 980,822 | $27,531,673 | $27,619,948 | +$88,275 | +0.32% | |
| Engaged Capital | Glenn W. Welling | 7.10% | 827,619 | $23,231,265 | $23,305,751 | +$74,486 | +0.32% |
| Price T Rowe Associates Inc | 0.00% | 825,688 | $23,178,000 | $23,251,374 | +$73,374 | +0.32% | |
| First Trust Advisors Lp | 0.01% | 790,574 | $22,191,412 | $22,262,564 | +$71,152 | +0.32% | |
| Tensile Capital Management Lp | 2.69% | 694,846 | $19,504,327 | $19,566,863 | +$62,536 | +0.32% | |
| Qube Research & Technologies Ltd | 0.02% | 659,449 | $18,510,733 | $18,570,084 | +$59,351 | +0.32% | |
| Charles Schwab Investment Management Inc | 0.00% | 610,370 | $17,133,086 | $17,188,019 | +$54,933 | +0.32% | |
| Northern Trust Corp | 0.00% | 608,043 | $17,067,767 | $17,122,491 | +$54,724 | +0.32% | |
| Susquehanna International Group, Llp | 0.01% | 540,649 | $15,176,017 | $15,224,676 | +$48,659 | +0.32% | |
| Fmr Llc | 0.00% | 528,117 | $14,824,257 | $14,871,775 | +$47,518 | +0.32% | |
| Citadel Advisors Llc | 0.01% | 502,789 | $14,113,287 | $14,158,538 | +$45,251 | +0.32% | |
| Dimensional Fund Advisors Lp | 0.00% | 415,507 | $11,663,462 | $11,700,677 | +$37,215 | +0.32% | |
| Geneva Capital Management Llc | 0.25% | 389,591 | $10,935,824 | $10,970,883 | +$35,059 | +0.32% | |
| Jupiter Asset Management Ltd | 0.05% | 389,394 | $10,930,290 | $10,965,335 | +$35,045 | +0.32% | |
| Ubs Group Ag | 0.00% | 383,387 | $10,761,672 | $10,796,178 | +$34,506 | +0.32% | |
| Gagnon Securities Llc | 2.03% | 375,769 | $10,547,836 | $10,581,655 | +$33,819 | +0.32% | |
| Bank Of New York Mellon Corp | 0.00% | 372,393 | $10,453,086 | $10,486,587 | +$33,501 | +0.32% | |
| Jane Street Group, Llc | 0.01% | 369,512 | $10,372,202 | $10,405,458 | +$33,256 | +0.32% | |
| Principal Financial Group Inc | 0.01% | 368,654 | $10,348,119 | $10,381,297 | +$33,178 | +0.32% | |
| Bnp Paribas Financial Markets | 0.01% | 362,762 | $10,182,729 | $10,215,378 | +$32,649 | +0.32% | |
| Vanguard Fiduciary Trust Co | 0.00% | 356,102 | $9,995,783 | $10,027,832 | +$32,049 | +0.32% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 320,085 | $8,984,786 | $9,013,594 | +$28,808 | +0.32% | |
| Armistice Capital, Llc | 0.22% | 278,000 | $7,803,460 | $7,828,480 | +$25,020 | +0.32% | |
| Invesco Ltd. | 0.00% | 259,162 | $7,274,677 | $7,298,002 | +$23,325 | +0.32% | |
| Westerly Capital Management, Llc | 1.30% | 250,000 | $7,017,500 | $7,040,000 | +$22,500 | +0.32% | |
| Barclays Plc | 0.00% | 242,685 | $6,812,168 | $6,834,010 | +$21,842 | +0.32% | |
| Tejara Capital Ltd | 2.76% | 239,237 | $6,715,383 | $6,736,914 | +$21,531 | +0.32% | |
| Potrero Capital Research Llc | 4.10% | 238,590 | $6,697,221 | $6,718,694 | +$21,473 | +0.32% | |
| Group One Trading Llc | 0.19% | 230,780 | $6,477,995 | $6,498,765 | +$20,770 | +0.32% | |
| Walleye Trading Llc | 0.09% | 219,630 | $6,165,014 | $6,184,781 | +$19,767 | +0.32% | |
| Palisade Capital Management, Lp | 0.26% | 210,544 | $5,909,970 | $5,928,919 | +$18,949 | +0.32% | |
| New York State Common Retirement Fund | 0.01% | 178,303 | $5,004,965 | $5,021,012 | +$16,047 | +0.32% | |
| Schwartz Investment Counsel Inc | 0.16% | 175,000 | $4,912,250 | $4,928,000 | +$15,750 | +0.32% |
Frequently asked questions about BL
Who owns the most BL stock?
The largest holders of BL are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for BLACKLINE INC (BL).
Is BL widely held by superinvestors?
Many widely followed stocks like BL appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly BL is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.